ABSTRACT The received view is that Yunjidang’s feminist philosophy focuses on female sagehood, drawing on the theory of the equal human nature of women and men. I argue that there is much more to it than that, and that her views are anchored in and a development of Mengzi’s philosophy. She creatively interpreted and extended his philosophy, adopting the neo-Confucian metaphysics of the One and the Many. She argued not just for the potential but for the actual gender equality of (...) women and men. In addition, she laid the groundwork for a gender inclusive virtue ethics. Showing as much requires understanding the historical place of Yunjidang in Joseon dynasty, the neo-Confucian metaphysics that informs her arguments, and her views on gender essentialism and virtue ethics. This article exposes and explains Yunjidang’s comprehensive feminist philosophy and her bold theses: the actual gender equality of embodied women and men and a gender inclusive virtue ethics. (shrink)